. >> tony stevens and his colleagues at the national industries for the blind work right next to the metro stop. but the station does not have the bumpy tiles that indicate the end of a platform. >> anybody that has ever dealt with a crowded platform on the train is not just being a person who is blind. anybody, you feel it on your feet. you feel it with the cane that you have. it lets you know that you're almost on the edge. >> 65 of metro's 86 stations have the tiles already in place. ten others will have them by 2015. including the twin brooks station where the installation is underway. the 11 remaining stations need funding. >> the bumpy tiles need to be in our key stations and really, i mean, these are stations that are transfer points and stations that have the most activity. >> metro points out it is already in full compliance with the americans with disabilities act. the ada. >> so that requirement was met a long time ago. everything we are doing now is over and above what is required. basically being done in the interest of our customers. >> metro insists its intent is to ha